/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.trace.refinement.strategy WOLF -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w128_d16_e0.c


--------------------------------------------------------------------------------


This is Ultimate 0.2.5-dev-17387ad-m
[2024-11-06 06:24:16,264 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-06 06:24:16,350 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf
[2024-11-06 06:24:16,358 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-06 06:24:16,359 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-06 06:24:16,391 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-06 06:24:16,392 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-06 06:24:16,392 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-06 06:24:16,393 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-06 06:24:16,393 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-06 06:24:16,393 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-06 06:24:16,394 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-06 06:24:16,395 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-06 06:24:16,397 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-06 06:24:16,397 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-06 06:24:16,398 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-06 06:24:16,398 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-06 06:24:16,398 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-06 06:24:16,398 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-06 06:24:16,399 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-06 06:24:16,399 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-06 06:24:16,400 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2024-11-06 06:24:16,400 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2024-11-06 06:24:16,400 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-06 06:24:16,401 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2024-11-06 06:24:16,401 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-06 06:24:16,401 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-06 06:24:16,402 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-06 06:24:16,402 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-06 06:24:16,402 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-06 06:24:16,405 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-06 06:24:16,405 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-06 06:24:16,406 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-06 06:24:16,406 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-06 06:24:16,406 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-06 06:24:16,407 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2024-11-06 06:24:16,407 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt 
[2024-11-06 06:24:16,407 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-06 06:24:16,407 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-06 06:24:16,407 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-06 06:24:16,408 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-06 06:24:16,409 INFO  L153        SettingsManager]:  * Looper check in Petri net analysis=SEMANTIC
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> WOLF
[2024-11-06 06:24:16,692 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-06 06:24:16,723 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-06 06:24:16,726 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-06 06:24:16,728 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-06 06:24:16,728 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-06 06:24:16,729 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w128_d16_e0.c
[2024-11-06 06:24:18,336 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-06 06:24:18,613 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-06 06:24:18,614 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w128_d16_e0.c
[2024-11-06 06:24:18,629 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7457194ab/433cc2d3e83848e4a79c8015ae0ba73e/FLAG1a6ebf0dd
[2024-11-06 06:24:18,931 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7457194ab/433cc2d3e83848e4a79c8015ae0ba73e
[2024-11-06 06:24:18,933 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-06 06:24:18,934 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2024-11-06 06:24:18,936 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-06 06:24:18,936 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-06 06:24:18,941 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-06 06:24:18,942 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:24:18" (1/1) ...
[2024-11-06 06:24:18,944 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76bc43ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:24:18, skipping insertion in model container
[2024-11-06 06:24:18,944 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:24:18" (1/1) ...
[2024-11-06 06:24:19,005 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-06 06:24:19,197 WARN  L250   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w128_d16_e0.c[1335,1348]
[2024-11-06 06:24:19,397 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-06 06:24:19,411 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-06 06:24:19,424 WARN  L250   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w128_d16_e0.c[1335,1348]
[2024-11-06 06:24:19,534 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-06 06:24:19,561 INFO  L204         MainTranslator]: Completed translation
[2024-11-06 06:24:19,562 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:24:19 WrapperNode
[2024-11-06 06:24:19,562 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-06 06:24:19,563 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-06 06:24:19,563 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-06 06:24:19,563 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-06 06:24:19,572 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:24:19" (1/1) ...
[2024-11-06 06:24:19,604 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:24:19" (1/1) ...
[2024-11-06 06:24:19,680 INFO  L138                Inliner]: procedures = 18, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 913
[2024-11-06 06:24:19,681 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-06 06:24:19,681 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-06 06:24:19,682 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-06 06:24:19,682 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-06 06:24:19,696 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:24:19" (1/1) ...
[2024-11-06 06:24:19,696 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:24:19" (1/1) ...
[2024-11-06 06:24:19,706 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:24:19" (1/1) ...
[2024-11-06 06:24:19,731 INFO  L175           MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0].
[2024-11-06 06:24:19,732 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:24:19" (1/1) ...
[2024-11-06 06:24:19,732 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:24:19" (1/1) ...
[2024-11-06 06:24:19,764 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:24:19" (1/1) ...
[2024-11-06 06:24:19,773 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:24:19" (1/1) ...
[2024-11-06 06:24:19,781 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:24:19" (1/1) ...
[2024-11-06 06:24:19,791 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:24:19" (1/1) ...
[2024-11-06 06:24:19,818 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-06 06:24:19,819 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-06 06:24:19,819 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-06 06:24:19,819 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-06 06:24:19,820 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:24:19" (1/1) ...
[2024-11-06 06:24:19,826 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-06 06:24:19,842 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-06 06:24:19,874 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-11-06 06:24:19,878 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-11-06 06:24:19,913 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-06 06:24:19,914 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-11-06 06:24:19,914 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2024-11-06 06:24:19,914 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2024-11-06 06:24:19,914 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-06 06:24:19,914 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-06 06:24:20,226 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-06 06:24:20,234 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-06 06:24:21,123 INFO  L?                        ?]: Removed 271 outVars from TransFormulas that were not future-live.
[2024-11-06 06:24:21,125 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-06 06:24:21,138 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-06 06:24:21,139 INFO  L316             CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-06 06:24:21,139 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:24:21 BoogieIcfgContainer
[2024-11-06 06:24:21,139 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-06 06:24:21,142 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-06 06:24:21,142 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-06 06:24:21,145 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-06 06:24:21,146 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 06:24:18" (1/3) ...
[2024-11-06 06:24:21,146 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44b5dd4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:24:21, skipping insertion in model container
[2024-11-06 06:24:21,146 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:24:19" (2/3) ...
[2024-11-06 06:24:21,147 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44b5dd4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:24:21, skipping insertion in model container
[2024-11-06 06:24:21,147 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:24:21" (3/3) ...
[2024-11-06 06:24:21,148 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.circular_pointer_top_w128_d16_e0.c
[2024-11-06 06:24:21,167 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-06 06:24:21,167 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-06 06:24:21,226 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-06 06:24:21,232 INFO  L333      AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6e4f2e7d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-06 06:24:21,233 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-06 06:24:21,239 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-11-06 06:24:21,248 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2024-11-06 06:24:21,248 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-06 06:24:21,249 INFO  L215           NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-06 06:24:21,249 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-06 06:24:21,256 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-06 06:24:21,256 INFO  L85        PathProgramCache]: Analyzing trace with hash 1944675641, now seen corresponding path program 1 times
[2024-11-06 06:24:21,278 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2024-11-06 06:24:21,279 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1359904686]
[2024-11-06 06:24:21,279 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-06 06:24:21,280 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2024-11-06 06:24:21,280 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2024-11-06 06:24:21,284 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2024-11-06 06:24:21,288 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process
[2024-11-06 06:24:21,784 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-06 06:24:21,800 INFO  L255         TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 1 conjuncts are in the unsatisfiable core
[2024-11-06 06:24:21,808 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-06 06:24:21,839 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked.
[2024-11-06 06:24:21,839 INFO  L307         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-06 06:24:21,840 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2024-11-06 06:24:21,840 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1359904686]
[2024-11-06 06:24:21,841 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1359904686] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-06 06:24:21,841 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-06 06:24:21,841 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-11-06 06:24:21,843 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343149293]
[2024-11-06 06:24:21,848 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-06 06:24:21,852 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-11-06 06:24:21,853 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2024-11-06 06:24:21,877 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-11-06 06:24:21,878 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-06 06:24:21,879 INFO  L87              Difference]: Start difference. First operand  has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand  has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3)
[2024-11-06 06:24:21,892 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-06 06:24:21,892 INFO  L93              Difference]: Finished difference Result 35 states and 47 transitions.
[2024-11-06 06:24:21,893 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2024-11-06 06:24:21,894 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23
[2024-11-06 06:24:21,895 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-06 06:24:21,901 INFO  L225             Difference]: With dead ends: 35
[2024-11-06 06:24:21,901 INFO  L226             Difference]: Without dead ends: 17
[2024-11-06 06:24:21,904 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-06 06:24:21,907 INFO  L432           NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-06 06:24:21,909 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-06 06:24:21,925 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17 states.
[2024-11-06 06:24:21,937 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17.
[2024-11-06 06:24:21,939 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 17 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2024-11-06 06:24:21,939 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions.
[2024-11-06 06:24:21,941 INFO  L78                 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 23
[2024-11-06 06:24:21,942 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-06 06:24:21,942 INFO  L471      AbstractCegarLoop]: Abstraction has 17 states and 19 transitions.
[2024-11-06 06:24:21,942 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3)
[2024-11-06 06:24:21,943 INFO  L276                IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions.
[2024-11-06 06:24:21,945 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2024-11-06 06:24:21,945 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-06 06:24:21,945 INFO  L215           NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-06 06:24:21,962 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0
[2024-11-06 06:24:22,146 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2024-11-06 06:24:22,147 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-06 06:24:22,148 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-06 06:24:22,148 INFO  L85        PathProgramCache]: Analyzing trace with hash 265954675, now seen corresponding path program 1 times
[2024-11-06 06:24:22,149 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2024-11-06 06:24:22,154 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1833685961]
[2024-11-06 06:24:22,154 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-06 06:24:22,154 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2024-11-06 06:24:22,154 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2024-11-06 06:24:22,159 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2024-11-06 06:24:22,161 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process
[2024-11-06 06:24:22,660 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-06 06:24:22,677 INFO  L255         TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 14 conjuncts are in the unsatisfiable core
[2024-11-06 06:24:22,685 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-06 06:24:22,917 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2024-11-06 06:24:22,918 INFO  L307         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-06 06:24:22,918 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2024-11-06 06:24:22,919 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1833685961]
[2024-11-06 06:24:22,919 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1833685961] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-06 06:24:22,919 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-06 06:24:22,920 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-06 06:24:22,920 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788226467]
[2024-11-06 06:24:22,921 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-06 06:24:22,922 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-06 06:24:22,922 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2024-11-06 06:24:22,923 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-06 06:24:22,923 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-06 06:24:22,923 INFO  L87              Difference]: Start difference. First operand 17 states and 19 transitions. Second operand  has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-06 06:24:23,161 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-06 06:24:23,162 INFO  L93              Difference]: Finished difference Result 27 states and 32 transitions.
[2024-11-06 06:24:23,163 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-06 06:24:23,163 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 23
[2024-11-06 06:24:23,163 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-06 06:24:23,164 INFO  L225             Difference]: With dead ends: 27
[2024-11-06 06:24:23,164 INFO  L226             Difference]: Without dead ends: 25
[2024-11-06 06:24:23,165 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-06 06:24:23,166 INFO  L432           NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-06 06:24:23,168 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-06 06:24:23,168 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25 states.
[2024-11-06 06:24:23,174 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25.
[2024-11-06 06:24:23,174 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 25 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6)
[2024-11-06 06:24:23,175 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions.
[2024-11-06 06:24:23,176 INFO  L78                 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 23
[2024-11-06 06:24:23,177 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-06 06:24:23,177 INFO  L471      AbstractCegarLoop]: Abstraction has 25 states and 30 transitions.
[2024-11-06 06:24:23,177 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2024-11-06 06:24:23,178 INFO  L276                IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions.
[2024-11-06 06:24:23,178 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 45
[2024-11-06 06:24:23,179 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-06 06:24:23,179 INFO  L215           NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1]
[2024-11-06 06:24:23,194 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0
[2024-11-06 06:24:23,379 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2024-11-06 06:24:23,380 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-06 06:24:23,381 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-06 06:24:23,381 INFO  L85        PathProgramCache]: Analyzing trace with hash 416519459, now seen corresponding path program 1 times
[2024-11-06 06:24:23,383 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2024-11-06 06:24:23,383 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [353875245]
[2024-11-06 06:24:23,383 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-06 06:24:23,383 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2024-11-06 06:24:23,384 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2024-11-06 06:24:23,385 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2024-11-06 06:24:23,386 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process
[2024-11-06 06:24:24,836 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-06 06:24:24,884 INFO  L255         TraceCheckSpWp]: Trace formula consists of 656 conjuncts, 49 conjuncts are in the unsatisfiable core
[2024-11-06 06:24:24,898 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-06 06:24:26,814 INFO  L134       CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked.
[2024-11-06 06:24:26,815 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-06 06:24:28,275 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2024-11-06 06:24:28,275 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [353875245]
[2024-11-06 06:24:28,275 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [353875245] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-06 06:24:28,275 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [418239591]
[2024-11-06 06:24:28,276 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-06 06:24:28,276 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-06 06:24:28,276 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-06 06:24:28,297 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-11-06 06:24:28,299 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process
[2024-11-06 06:24:29,546 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-06 06:24:29,564 INFO  L255         TraceCheckSpWp]: Trace formula consists of 656 conjuncts, 40 conjuncts are in the unsatisfiable core
[2024-11-06 06:24:29,580 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-06 06:24:30,072 INFO  L134       CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked.
[2024-11-06 06:24:30,074 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-06 06:24:30,257 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleCvc4 [418239591] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-06 06:24:30,257 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-06 06:24:30,257 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13
[2024-11-06 06:24:30,257 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306558974]
[2024-11-06 06:24:30,258 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-06 06:24:30,258 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2024-11-06 06:24:30,258 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2024-11-06 06:24:30,262 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2024-11-06 06:24:30,263 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240
[2024-11-06 06:24:30,263 INFO  L87              Difference]: Start difference. First operand 25 states and 30 transitions. Second operand  has 13 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 13 states have internal predecessors, (31), 6 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 6 states have call successors, (12)
[2024-11-06 06:24:31,334 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-06 06:24:31,334 INFO  L93              Difference]: Finished difference Result 36 states and 44 transitions.
[2024-11-06 06:24:31,335 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2024-11-06 06:24:31,335 INFO  L78                 Accepts]: Start accepts. Automaton has  has 13 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 13 states have internal predecessors, (31), 6 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 6 states have call successors, (12) Word has length 44
[2024-11-06 06:24:31,336 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-06 06:24:31,336 INFO  L225             Difference]: With dead ends: 36
[2024-11-06 06:24:31,337 INFO  L226             Difference]: Without dead ends: 34
[2024-11-06 06:24:31,337 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420
[2024-11-06 06:24:31,338 INFO  L432           NwaCegarLoop]: 12 mSDtfsCounter, 10 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time
[2024-11-06 06:24:31,339 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 98 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time]
[2024-11-06 06:24:31,339 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 34 states.
[2024-11-06 06:24:31,348 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34.
[2024-11-06 06:24:31,349 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 34 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9)
[2024-11-06 06:24:31,352 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions.
[2024-11-06 06:24:31,352 INFO  L78                 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 44
[2024-11-06 06:24:31,353 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-06 06:24:31,353 INFO  L471      AbstractCegarLoop]: Abstraction has 34 states and 42 transitions.
[2024-11-06 06:24:31,353 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 13 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 13 states have internal predecessors, (31), 6 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 6 states have call successors, (12)
[2024-11-06 06:24:31,354 INFO  L276                IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions.
[2024-11-06 06:24:31,357 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 66
[2024-11-06 06:24:31,357 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-06 06:24:31,357 INFO  L215           NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1]
[2024-11-06 06:24:31,383 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0
[2024-11-06 06:24:31,572 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0
[2024-11-06 06:24:31,758 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt
[2024-11-06 06:24:31,759 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-06 06:24:31,759 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-06 06:24:31,759 INFO  L85        PathProgramCache]: Analyzing trace with hash 223728499, now seen corresponding path program 2 times
[2024-11-06 06:24:31,761 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2024-11-06 06:24:31,761 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1821769091]
[2024-11-06 06:24:31,761 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-06 06:24:31,762 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2024-11-06 06:24:31,762 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2024-11-06 06:24:31,765 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2024-11-06 06:24:31,767 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process
[2024-11-06 06:24:33,828 INFO  L227   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-06 06:24:33,828 INFO  L228   tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-06 06:24:33,886 INFO  L255         TraceCheckSpWp]: Trace formula consists of 960 conjuncts, 100 conjuncts are in the unsatisfiable core
[2024-11-06 06:24:33,903 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-06 06:24:55,045 INFO  L134       CoverageAnalysis]: Checked inductivity of 169 backedges. 15 proven. 64 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked.
[2024-11-06 06:24:55,046 INFO  L311         TraceCheckSpWp]: Computing backward predicates...